Large space force feedback system based on string

This paper presents a human-scale force feedback system with string, at the end of the article there is one experiment to test system efficient. The user interacts with the virtual environment using the string to feel haptic feedback, which is called SPIDER (Space Interface Device for Artificial Reality). As the system runs, the location of the user´s viewpoint will move at any time, virtual environment should catch up with the change of the viewpoint. In order to solve this problem, a calibration method is proposed. The purpose of the experiment is to examine the system stability and the unitarity of the user and the virtual environment. The result of the test indicate that as the user move his viewpoint, the virtual environment can change its scene instantly. To research several operators, the subjective evaluate reveals system establishment is correct.